The Collaborative International Dictionary
Stethal
Stethal \Steth"al\, n. [Stearic + ethal.] (Chem.) One of the higher alcohols of the methane series, homologous with ethal, and found in small quantities as an ethereal salt of stearic acid in spermaceti.
Wiktionary
stethal
n. (context chemistry English) One of the higher alcohols of the methane series, homologous with ethal, and found in small quantities as an ethereal salt of stearic acid in spermaceti.